See my previous answer to this same question. the vertical angles have to be right angles
4x - 5y = 40
4x = 40 + 5y
x = 10 + 5/4y
The x intercept is 10.
7 Meters. 63/9=7
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It's too short.<span> Write at least 20 characters to explain it well.</span>
---|--/--/--|--/--/--|--/--/--|--/--/--|--/--/--|--/--/--|--/--/--|--/--/--|--/--/--|--/--/--|--------------
-5 -4-11/3-3 -2 -1 0 1 2 8/3 3 4 5
8/3≈ 2,6
-11/3 ≈-3,6

Hope you could get an idea from here.
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